I use one that I bought at Habor Frieght($6.00) for a short time. I now use clip-ons for my glasses.($14.00-16.00) The H.F. clipped onto the sewing table . I also had to play with it to see properly. If you do not wear glasses, try reading glasses in 1.25 strenght. If you try using stronger ones Everything will be blurry. Tinker